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WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996

A bullet fired vertically upward from a gun held 2.0 m above the ground reaches its...

Physics
JAMB 2009

A bullet fired vertically upward from a gun held 2.0 m above the ground reaches its maximum height in 4.0s. calculate its initial velocity.


[g = 10ms-2]

  • A. 10 ms-1
  • B. 8 ms-1
  • C. 40 ms-1
  • D. 20 ms-1
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WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996
Correct Answer: Option C
Explanation

At maximum height, the final velocity, v = 0
thus from v = u - gt
0 = u - gt
∴ U = at = 10 x 4 = 40 mls

There is an explanation video available below.


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Explanation Video

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WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996
Join your school's WhatsApp group
Join your school's WhatsApp group
WAEC GCE Nov/Dec 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 332996
Myschool's prices for products & services are going up in November - Buy what you need now